64 Audio U18t Universal Reference In-Ear Monitors

The 64 Audio U18t stands as a benchmark in ultra-high-end universal in-ear monitors, featuring a record-setting 18 balanced armature drivers per side for uncompromising audio performance. Designed for audiophiles, mixing engineers, and stage professionals, U18t delivers unmatched clarity, micro-detail retrieval, and tonal accuracy across the entire frequency spectrum. This industry-first design integrates tia™ technology, apex™ venting, and precision crossover tuning to produce a soundstage that is vast, airy, and controlled—without listener fatigue. Housed in sleek aluminum shells with PVD-coated stainless steel faceplates and finished in Imperial Red, the U18t is both visually stunning and sonically peerless.

Specifications

• Driver Configuration: 1 tia High Driver, 1 High-Mid Driver, 8 Mid Drivers, 8 Low Drivers
• Frequency Response: 10 Hz – 20 kHz
• Sensitivity: 111 dB/mW @ 1 kHz
• Impedance: 9 Ω
• Apex Isolation: -10 dB (mX), -12 dB (m12), -15 dB (m15), -20 dB (PVD m20)
• Shell Material: CNC-Machined Aluminum
• Faceplate: PVD-Coated Stainless Steel with Electroformed Nickel Inlay
• Color: Imperial Red with Polished Gold Accents
• Cables: Two Eight-Braid SPC Cables (3.5mm Single-Ended & 4.4mm Balanced), 0.78mm 2-Pin, 0.26Ω, 25 AWG + 23 wires
• Included Accessories: Premium Carry Case, TrueFidelity Foam Tips (S/M/L), SpinFit Silicone Tips (S/M/L), Standard Silicone Tips (S/M/L), Apex Modules (m20, m15, m12, mX), Cleaning Tool, Shirt Clip, Cleaning Cloth, Round Sticker
• Technology: tia™ Driver & Single-Bore, apex™ Venting System, Precision Crossover Network
• Fit: Universal
• Designed & Assembled: In the USA using globally sourced components

Expanded Key Features List

• 18 Balanced Armature Drivers: Unprecedented multi-driver design ensures flawless detail retrieval and frequency balance across lows, mids, and highs.
• tia™ High Driver with Single-Bore: Delivers stunning treble extension with lifelike realism and zero tubing-induced distortion.
• Four Apex™ Modules Included: mX, m12, m15, and m20 provide customizable isolation and pressure relief for tailored listening comfort.
• Fast, Controlled Bass: Eight modified mid-BA drivers handle the low end for tight, responsive, and extended sub-bass performance.
• Reference-Level Tuning: Ideal for critical listening, professional monitoring, or mastering, with true-to-source accuracy and spatial clarity.
• PVD Stainless Steel Faceplate: Premium aesthetic featuring polished metalwork and Imperial Red enamel inlay for a signature look.
• SPC Eight-Braid Cable Set: Includes both 3.5mm and 4.4mm terminations with ultra-low impedance for pristine signal delivery.
• Precision-Crafted Shell: CNC-machined from aluminum for durability, comfort, and a sleek, ergonomic fit.

Q&A Section

Q: What makes the U18t different from other 64 Audio IEMs?
A: U18t is the world’s first universal-fit IEM with 18 balanced armature drivers, designed for unparalleled resolution, imaging, and tonal accuracy across all frequencies.

Q: What is the sound signature of the U18t?
A: U18t is tonally balanced and linear with fast, clean bass, detailed mids, and sparkling highs—ideal for both audiophiles and professional engineers.

Q: How does the U18t handle bass frequencies without dynamic drivers?
A: It uses eight mid-range BA drivers modified for low-frequency performance, delivering sub-bass depth and fast transients without distortion.

Q: What does the tia™ system do?
A: tia™ uses an open balanced armature high driver with a single-bore design to eliminate tubing resonance, resulting in lifelike treble and spacious imaging.

Q: What are apex™ modules, and how do they affect sound?
A: apex™ modules reduce ear canal pressure to improve comfort and expand the soundstage. U18t includes four options: mX, m12, m15, and the premium PVD m20.

Q: Are different cables included with the U18t?
A: Yes, the U18t comes with both a 3.5mm single-ended and a 4.4mm balanced SPC eight-braid cable for flexible connectivity.

Q: Is the U18t suitable for studio use?
A: Absolutely. Its reference tuning and detail make it ideal for mixing, mastering, and critical listening in professional environments.

Q: What accessories are included?
A: The U18t comes with a premium case, three types of ear tips, both cable types, four apex™ modules, a cleaning tool, cloth, clip, and sticker.